| .. | .. | 
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| 7 | 7 |   | 
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| 8 | 8 |  #define hugepages_supported() boot_cpu_has(X86_FEATURE_PSE) | 
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| 9 | 9 |   | 
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| 10 |  | -static inline int is_hugepage_only_range(struct mm_struct *mm,  | 
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| 11 |  | -					 unsigned long addr,  | 
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| 12 |  | -					 unsigned long len) {  | 
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| 13 |  | -	return 0;  | 
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| 14 |  | -}  | 
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| 15 |  | -  | 
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| 16 |  | -/*  | 
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| 17 |  | - * If the arch doesn't supply something else, assume that hugepage  | 
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| 18 |  | - * size aligned regions are ok without further preparation.  | 
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| 19 |  | - */  | 
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| 20 |  | -static inline int prepare_hugepage_range(struct file *file,  | 
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| 21 |  | -			unsigned long addr, unsigned long len)  | 
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| 22 |  | -{  | 
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| 23 |  | -	struct hstate *h = hstate_file(file);  | 
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| 24 |  | -	if (len & ~huge_page_mask(h))  | 
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| 25 |  | -		return -EINVAL;  | 
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| 26 |  | -	if (addr & ~huge_page_mask(h))  | 
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| 27 |  | -		return -EINVAL;  | 
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| 28 |  | -	return 0;  | 
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| 29 |  | -}  | 
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| 30 |  | -  | 
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| 31 |  | -static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,  | 
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| 32 |  | -					  unsigned long addr, unsigned long end,  | 
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| 33 |  | -					  unsigned long floor,  | 
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| 34 |  | -					  unsigned long ceiling)  | 
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| 35 |  | -{  | 
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| 36 |  | -	free_pgd_range(tlb, addr, end, floor, ceiling);  | 
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| 37 |  | -}  | 
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| 38 |  | -  | 
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| 39 |  | -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,  | 
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| 40 |  | -				   pte_t *ptep, pte_t pte)  | 
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| 41 |  | -{  | 
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| 42 |  | -	set_pte_at(mm, addr, ptep, pte);  | 
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| 43 |  | -}  | 
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| 44 |  | -  | 
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| 45 |  | -static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,  | 
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| 46 |  | -					    unsigned long addr, pte_t *ptep)  | 
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| 47 |  | -{  | 
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| 48 |  | -	return ptep_get_and_clear(mm, addr, ptep);  | 
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| 49 |  | -}  | 
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| 50 |  | -  | 
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| 51 |  | -static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,  | 
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| 52 |  | -					 unsigned long addr, pte_t *ptep)  | 
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| 53 |  | -{  | 
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| 54 |  | -	ptep_clear_flush(vma, addr, ptep);  | 
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| 55 |  | -}  | 
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| 56 |  | -  | 
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| 57 |  | -static inline int huge_pte_none(pte_t pte)  | 
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| 58 |  | -{  | 
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| 59 |  | -	return pte_none(pte);  | 
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| 60 |  | -}  | 
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| 61 |  | -  | 
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| 62 |  | -static inline pte_t huge_pte_wrprotect(pte_t pte)  | 
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| 63 |  | -{  | 
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| 64 |  | -	return pte_wrprotect(pte);  | 
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| 65 |  | -}  | 
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| 66 |  | -  | 
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| 67 |  | -static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,  | 
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| 68 |  | -					   unsigned long addr, pte_t *ptep)  | 
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| 69 |  | -{  | 
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| 70 |  | -	ptep_set_wrprotect(mm, addr, ptep);  | 
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| 71 |  | -}  | 
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| 72 |  | -  | 
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| 73 |  | -static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,  | 
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| 74 |  | -					     unsigned long addr, pte_t *ptep,  | 
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| 75 |  | -					     pte_t pte, int dirty)  | 
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| 76 |  | -{  | 
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| 77 |  | -	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);  | 
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| 78 |  | -}  | 
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| 79 |  | -  | 
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| 80 |  | -static inline pte_t huge_ptep_get(pte_t *ptep)  | 
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| 81 |  | -{  | 
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| 82 |  | -	return *ptep;  | 
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| 83 |  | -}  | 
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| 84 |  | -  | 
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| 85 |  | -static inline void arch_clear_hugepage_flags(struct page *page)  | 
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| 86 |  | -{  | 
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| 87 |  | -}  | 
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| 88 |  | -  | 
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| 89 |  | -#ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE  | 
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| 90 |  | -static inline bool gigantic_page_supported(void) { return true; }  | 
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| 91 |  | -#endif  | 
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| 92 |  | -  | 
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| 93 | 10 |  #endif /* _ASM_X86_HUGETLB_H */ | 
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